Writing instrument



FIG. 1 is a perspective view as seen from the top, front and right side of a writing instrument showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof, the right side elevation being a mirror image thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a perspective view as seen from the top, front and right side of a second embodiment of a writing instrument showing our new design;

FIG. 8 is a top plan view thereof;

FIG. 9 is a left side elevational view thereof, the right side elevation being a mirror image thereof;

FIG. 10 is a bottom plan view thereof;

FIG. 11 is a front elevational view thereof; and,

FIG. 12 is a rear elevational view thereof. 

The ornamental design for a writing instrument, as shown and described. 